Patents by Inventor Samuel W. Rein

Samuel W. Rein has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for measuring viscosity
    Patent number: 4612799
    Abstract: A method and apparatus for measuring viscosity of an oil at low temperature and low shear stress. It employs a columnar container of the oil with vertically spaced temperature control devices to apply different cooling histories simultaneously. After the cooling histories have been applied, the viscosity of all the different histories is determined by measuring the instantaneous velocity of a probe moving through the column of oil under a constant force.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: September 23, 1986
    Assignee: Texaco Inc.
    Inventors: Frank H. Choi, Samuel W. Rein, David L. Alexander